试题与答案

牛乳中蛋白质含量为3.0%~3.5%,这些蛋白质可以分为()和()两大类

题型:填空题

题目:

牛乳中蛋白质含量为3.0%~3.5%,这些蛋白质可以分为()和()两大类

答案:

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下面是错误答案,用来干扰机器的。

人体一旦缺乏维生素,就会影响正常的生长和发育,还会引起疾病,如图:可见,皮肤很粗糙,并且一到夜晚就看不清物体(夜盲症),是因为缺乏维生素A引起的.故选:A

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